Amendment_2_SF30_Roark.pdf

(x)

AG-4639-S-15-0012

x x

1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted ; or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGEMENT TO BE RECEIVED AT

THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted , such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

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NRCS-SC-124639

COLUMBIA SC 29201

SUITE 950

1835 ASSEMBLY ST

USDA-NRCS-SOUTH CAROLINA STATE OFC

07/15/2015000002

13. THIS ITEM ONLY APPLIES TO MODIFICATION OF CONTRACTS/ORDERS. IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

12. ACCOUNTING AND APPROPRIATION DATA (If required) is not extended.is extended, Items 8 and 15, and returning

Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended , by one of the following methods: (a) By completing

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

FACILITY CODE CODE

10B. DATED (SEE ITEM 13)

10A. MODIFICATION OF CONTRACT/ORDER NO.

9B. DATED (SEE ITEM 11)

9A. AMENDMENT OF SOLICITATION NO.

CODE

8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP Code)

7. ADMINISTERED BY (If other than Item 6)CODE 6. ISSUED BY

PAGE OF PAGES

4. REQUISITION/PURCHASE REQ. NO.3. EFFECTIVE DATE2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO. (If applicable)

1. CONTRACT ID CODE

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

06/12/2015

CHECK ONE A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority) appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

E. IMPORTANT: Contractor is not, is required to sign this document and return __________________ copies to the issuing office.

ORDER NO. IN ITEM 10A.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

The purpose of this amendment is to provide changes to specifications in the solicitation relating to rockfill. This amendment also addresses a bridge crossing; the clarification provides for changes to the specifications.

See attached list of changes.

Quotes are now due Wednesday, July 22, 2015 by no later than 4:00pm (EST)

All other terms and conditions remain unchanged.

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)15A. NAME AND TITLE OF SIGNER (Type or print)

15C. DATE SIGNED 16B. UNITED STATES OF AMERICA 15B. CONTRACTOR/OFFEROR 16C. DATE SIGNED

(Signature of person authorized to sign) (Signature of Contracting Officer)

AMY STONEBRAKER

STANDARD FORM 30 (REV. 10-83)

Prescribed by GSA

FAR (48 CFR) 53.243

NSN 7540-01-152-8070

Previous edition unusable

Except as provided herein, all terms and conditions of the document referenced in Item 9 A or 10A, as heretofore changed, remains unchanged and in full force and effect .

CONTINUATION SHEET

Amendment No. 2

ROARK WRP Restoration Solicitation No. AG-4639-S-15-0012

1. The old timber bridge located on the project site may not be used by contractors during this project. The bridge is not wide enough to accommodate construction equipment.

2. The size of the rockfill used on top of the geotextile, has changed from Class 2 to Class 5. It was changed because the Class 5 rock is more suitable and more readily available.

3. Performance time is increased by 1 day. Revised performance time is 25 calendar days.

4. Section J- List of Attachments, Construction Specifications

Revised Construction Specifications The following is a list of the construction specifications revised by this amendment:

Replace the following Specifications No. Name 11 Removal of Water 21 Excavation 25 Rockfill

Previous versions of the specifications should be replaced with this revised version.

End Continuation Sheet

Construction Specification 11—Removal of Water

1. Scope The work consists of the removal of surface water and ground water as necessary to perform the construction required by the contract in accordance with the specifications. It shall include: (1) constructing, installing, building, and maintaining all necessary temporary water containment facilities, channels, and diversions; (2) furnishing, installing, and operating all necessary pumps, piping, and other facilities and equipment; and (3) removing all such temporary works and equipment after their intended function is no longer required.

2. Diverting surface water The contractor shall install, maintain, and operate all cofferdams, channels, flumes, sumps, and all other temporary diversion and protective works needed to divert streamflow and other surface water through or around the construction site. Control of surface water shall be continuous during the period that damage to construction work could occur. Unless otherwise specified and/or approved, the diversion outlet shall be into the same drainageway that the water would have reached before being diverted.

The contractor shall furnish the contracting officer, in writing, a proposed plan for diverting surface water before beginning any construction activities for which a diversion is required, unless waived in section 8 of this specification. Acceptance of this plan or the waiving of the plan requirement will not relieve the contractor of the responsibilities related to this activity during the process of completing the work as specified.

3. Dewatering the construction site Foundations, cutoff trenches, and all other parts of the construction site shall be dewatered and kept free of standing water and muddy conditions as necessary for the proper execution of the work. The contractor shall furnish, install, operate, and maintain all drains, sumps, pumps, casings, well points, and all other equipment required to properly dewater the site as specified.

Dewatering systems that cause a loss of soil fines from the foundation areas will not be permitted.

The contractor shall furnish the contracting officer, in writing, a proposed plan for dewatering before commencing with any construction activity for which dewatering may be required, unless waived in section 8 of this specification. Acceptance of this plan or the waiving of the plan requirement will not relieve the contractor of the responsibilities for completing the specified work.

4. Dewatering borrow areas The contractor shall maintain all borrow areas free of surface water or otherwise provide for timely and effective removal of surface and subsurface water that accumulates within the borrow area, unless waived in section 8 of this specification. Borrow material shall be processed as necessary to achieve proper and uniform moisture content at the time of placement.

If pumping to dewater borrow areas is included as a bid item of work in the bid schedule, each pump discharge pipe shall be equipped with a water meter. The meter shall be such that the measured quantity of water is accurate within 3 percent of the true quantity. The contractor shall

Roark WRP-Amended 11-1 June 2015 NRCS-South Carolina Williamsburg County provide necessary support to perform accuracy tests of the water meter when requested by the contracting officer.

5. Erosion and pollution control Removal of water from the construction site, including the borrow areas, shall be accomplished so that erosion and the transporting of sediment and other pollutants are minimized. Dewatering activities shall be accomplished in a manner that the water table water quality is not altered.

Pollution control activities shall not conflict with the requirements of Construction Specification 5, Pollution Control, if it is a part of this contract.

6. Removal of temporary works When temporary works are no longer needed, the contractor shall remove and return the area to a condition similar to that which existed before construction. Areas where temporary works were located shall be graded for slightly appearance with no obstruction to natural surface waterflows or the proper functioning and access to the works of improvement installed. The contractor shall exercise extreme care during the removal stages to minimize the loss of soil sediment and debris that was trapped during construction.

Pipes, casings, and any other material used to dewater the site shall be removed from temporary wells. The wells shall be filled to ground level with clean gravel or other suitable material approved by the contracting officer. The contractor shall exercise extreme care to prevent pollution of the ground water by these actions.

7. Measurement and payment Compensation for any item of work described in the contract, but not listed in the bid schedule is included in the payment for the contract line item to which it is made subsidiary. Such items and the items to which they are made subsidiary are identified in section 8 of this specification.

8. Items of work and construction details Items of work to be performed in conformance with this specification and construction details therefore are:

A. Subsidiary Item, Removal of Water

1. This item shall consist of the removal of water for construction of the bid items.

2. The site can become flooded when the river is in flood stage; depending upon the amount of water, it may be diverted or the work may alternately need to be postponed. The Contracting Officer must approve requests for postponement due to flooding.

3. Removal of Water is made subsidiary to the bid items under which the work is performed.

All compensation for removal of water shall be considered as included in the bid price for Bid Items 2 - 5.

A. Subsidiary Item, Removal of Water for Access

1. This item shall consist of creating an access road adjacent to an existing bridge necessary for construction access.

2. On part of the access road to the site there is a small wooden bridge which cannot be used for any vehicles during construction.

Roark WRP-Amended 11-2 June 2015 NRCS-South Carolina Williamsburg County

3. The Contractor shall construct an access road a minimum of 18 feet away from the bridge in the low area as marked in the field and designated by the Inspector. The access road shall be a minimum of 72-feet long.

4. The constructed access road is considered temporary and all components of it must be removed at the end of construction.

5. Equipment access mats such as those manufactured by or available from Dura-Base, LLC., Crane Mats, LLC, Bridgewell Mats, LLC, Sterling Lumber Company, Spartan Mats or other may be used. The low area typically contains water and the access road will need to be used during wet periods unless the river is in flood stage.

6. The contractor shall apply geotextile underneath any rock laid.

7. Removal of Water for Access is made subsidiary to the bid item under which the work is performed. All compensation for removal of water for access shall be considered as included in the bid price for Bid Item 1, Mobilization.

- END OF CONSTRUCTION SPECIFICATION 11 -

Roark WRP-Amended 11-3 June 2015 NRCS-South Carolina Williamsburg County

Construction Specification 21—Excavation

The work shall consist of the excavation required by the drawings and specifications and disposal of the excavated materials.

2. Classification Excavation is classified as common excavation, rock excavation, or unclassified excavation in accordance with the following definitions.

Common excavation is defined as the excavation of all materials that can be excavated, transported, and unloaded using heavy ripping equipment and wheel tractor-scrapers with pusher tractors or that can be excavated and dumped into place or loaded onto hauling equipment by excavators having a rated capacity of one cubic yard or larger and equipped with attachments (shovel, bucket, backhoe, dragline, or clam shell) appropriate to the material type, character, and nature of the materials.

Rock excavation is defined as the excavation of all hard, compacted, or cemented materials that require blasting or the use of ripping and excavating equipment larger than defined for common excavation. The excavation and removal of isolated boulders or rock fragments larger than 1 cubic yard encountered in materials otherwise conforming to the definition of common excavation shall be classified as rock excavation. The presence of isolated boulders or rock fragments larger than 1 cubic yard is not in itself sufficient cause to change the classification of the surrounding material.

For the purpose of these classifications, the following definitions shall apply:

Heavy ripping equipment is a rear-mounted, heavy duty, single-tooth, ripping attachment mounted on a track type tractor having a power rating of at least 250 flywheel horsepower unless otherwise specified in section 10.

Wheel tractor-scraper is a self-loading (not elevating) and unloading scraper having a struck bowl capacity of at least 12 cubic yards.

Pusher tractor is a track type tractor having a power rating of at least 250 flywheel horsepower equipped with appropriate attachments.

Unclassified excavation is defined as the excavation of all materials encountered, including rock materials, regardless of their nature or the manner in which they are removed.

3. Blasting The transportation, handling, storage, and use of dynamite and other explosives shall be directed and supervised by a person(s) of proven experience and ability who is authorized and qualified to conduct blasting operations.

Blasting shall be done in a manner as to prevent damage to the work or unnecessary fracturing of the underlying rock materials and shall conform to any special requirements in section 10 of this specification. When specified in section 10, the contractor shall furnish the engineer, in writing, a

Roark WRP-Amended 21-1 June 2015 NRCS-South Carolina Williamsburg County blasting plan before blasting operations begin.

4. Use of excavated material To the extent they are needed, all suitable material from the specified excavations shall be used in the construction of required permanent earthfill or rockfill. The suitability of material for specific purposes is determined by the engineer.

Method 1—To the extent they are needed, all suitable material from the specified excavations shall be used in the construction of required permanent earthfill or rockfill. The suitability of material for specific purposes is determined by the engineer. The contractor shall not waste or otherwise dispose of suitable excavated material.

Method 2—Suitable material from the specified excavations may be used in the construction of required earthfill or rockfill. The suitability of material for specific purposes is determined by the engineer.

5. Disposal of waste materials Method 1—All surplus or unsuitable excavated materials are designated as waste and shall be disposed of at the locations shown on the drawings.

Method 2—All surplus or unsuitable excavated materials are designated as waste and shall be disposed of by the contractor at sites of his own choosing away from the site of the work. The disposal shall be in an environmentally acceptable manner that does not violate local rules and regulations.

6. Excavation limits Excavations shall comply with OSHA Construction Industry Standards (29CFR Part 1926) Subpart P, Excavations, Trenching, and Shoring. All excavations shall be completed and maintained in a safe and stable condition throughout the total construction phase. Structure and trench excavations shall be completed to the specified elevations and to the length and width required to safely install, adjust, and remove any forms, bracing, or supports necessary for the installation of the work. Excavations outside the lines and limits shown on the drawings or specified herein required to meet safety requirements shall be the responsibility of the contractor in constructing and maintaining a safe and stable excavation.

7. Borrow excavation When the quantities of suitable material obtained from specified excavations are insufficient to construct the specified earthfills and earth backfills, additional material shall be obtained from the designated borrow areas. The extent and depth of borrow pits within the limits of the designated borrow areas shall be as specified in section 10 or as approved by the engineer.

Borrow pits shall be excavated and finally dressed to blend with the existing topography and sloped to prevent ponding and to provide drainage.

8. Overexcavation Excavation in rock beyond the specified lines and grades shall be corrected by filling the resulting voids with portland cement concrete made of materials and mix proportions approved by the engineer. Concrete that will be exposed to the atmosphere when construction is completed shall

Roark WRP-Amended 21-2 June 2015 NRCS-South Carolina Williamsburg County meet the requirements of concrete selected for use under Construction Specification 31, Concrete for Major Structures, or 32, Structure Concrete, as appropriate.

Concrete that will be permanently covered shall contain not less than five bags of cement per cubic yard. The concrete shall be placed and cured as specified by the engineer.

Excavation in earth beyond the specified lines and grades shall be corrected by filling the resulting voids with approved, compacted earthfill. The exception to this is that if the earth is to become the subgrade for riprap, rockfill, sand or gravel bedding, or drainfill, the voids may be filled with material conforming to the specifications for the riprap, rockfill, bedding, or drainfill.

Before correcting an overexcavation condition, the contractor shall review the planned corrective action with the engineer and obtain approval of the corrective measures.

9. Measurement and payment For items of work for which specific lump sum prices are established in the contract, the quantity of work will not be measured for payment. Acceptance of work shall be based on each crossing meeting the typical cross-section and dimensions as shown in the drawings. Payment for this item will be made at the contract lump sum price for the item and such payment will constitute full compensation for all labor, materials, equipment, and all other items necessary and incidental to the completion of the work

Compensation for any item of work described in the contract, but not listed in the bid schedule is included in the payment for the item of work to which it is made subsidiary. Such items and the items to which they are made subsidiary are identified in Section 10 of this specification.

10. Items of work and construction details Items of work to be performed in conformance with this specification and construction details therefore are:

A. Bid Items 2 - 4, Construct Crossings

1. This item shall consist of excavating a section of roadway to natural floodplain channel elevation, then placing geotextile material and rockfill to form a crossing as shown in the drawings. The excavated slopes of the crossing shall be a minimum of 10 to 1. The bottom length and elevations are not the same for each crossing. See Drawing 3 of 3 for a listing of these dimensions for each crossing. The elevations listed in Drawing 3 of 3 are based on the temporary bench mark established for each crossing. Please see the list of TBMs for the description and elevation of the TBM established at each crossing location.

2. All roads on the site damaged by construction equipment shall be repaired to the same condition as before construction or better and seeded.

2. No blasting is required in this contract.

3. Waste material from excavation shall be placed on the existing roads in a manner approved of by the NRCS Inspector or COR.

4. All excavation is classified as common excavation. Material excavated shall be placed in the existing ditch adjacent to the crossings. Excavated material may not be placed on natural ground. Material placed in the ditch shall not extend above adjacent natural ground elevation and shall be smoothed and shaped to match existing topography if site conditions permit.

5. Furnishing and installing geotextile is made subsidiary to this bid item. See Construction

Roark WRP-Amended 21-3 June 2015 NRCS-South Carolina Williamsburg County

Specification 95 for details. All compensation for furnishing and installing geotextile to construct the crossings shall be considered as included in the lump sum bid price for Bid Items 2 - 4, Construct Crossings.

6. Furnishing and installing rockfill is made subsidiary to these bid items. See Construction Specification 25 for details. All compensation for furnishing and installing rockfill to construct the crossings shall be considered as included in the contract lump sum bid price for Bid Items 2 - 4, Construct Crossings.

7. Pollution Control is made subsidiary to these bid items. See Construction Specification 5 for details. All compensation for pollution control to construct the crossings shall be considered as included in the lump sum bid price for Bid Items 2 - 4, Construct Crossings.

8. Removal of Water is made subsidiary to these bid items. See Construction Specification 11 for details. All compensation for removal of water to construct the crossings shall be considered as included in the lump sum bid price for Bid Items 2 - 4, Construct Crossings.

9. Clearing and Grubbing is made subsidiary to these bid items. See Construction Specification 2 for details. All compensation for clearing and grubbing necessary to construct the crossings shall be considered as included in the lump sum bid price for Bid Items 2 - 4, Construct Crossings.

10. Structure Removal is made subsidiary to these bid items. See Construction Specification 3 for details. All compensation for structure removal necessary to construct the crossings shall be considered as included in the lump sum bid price for Bid Items 2 - 4, Construct Crossings.

11. Measurement and payment shall be by the method stated in Section 9 of this specification.

All compensation for constructing the crossings shall be considered as included in the lump sum bid price for Bid Items 2 - 4, Construct Crossings.

B. Subsidiary Item, Excavation for Temporary Access

1. This item shall consist of excavating the sideslopes to create a gentler slope for equipment access on the access road created adjacent to the small wooden bridge.

2. Waste material from excavation shall be placed on the existing roads in a manner approved of by the NRCS Inspector or COR.

3. All excavation is classified as common excavation. Material excavated shall be placed in the existing ditch adjacent to the crossings. Excavated material may not be placed on natural ground. Material placed in the ditch shall not extend above adjacent natural ground elevation and shall be smoothed and shaped to match existing topography if site conditions permit.

4. Excavation for Temporary Access is made subsidiary to the bid items under which the work is performed. All compensation for removal of water shall be considered as included in the bid price for Bid Item 1, Mobilization.

- END OF SPECIFICATION 21 -

Roark WRP-Amended 21-4 June 2015 NRCS-South Carolina Williamsburg County

Construction Specification 25—Rockfill

The work consists of the construction of rockfill zones of embankments and other rockfills required by the drawings and specifications, including bedding where specified.

2. Material Material for rockfill and bedding shall be obtained from the specified sources unless otherwise specified in section 10 of this specification. The material shall be excavated, selected, processed, and handled as necessary to conform to the specified gradation requirements.

3. Foundation preparation Foundations for rockfill shall be stripped to remove vegetation and other unsuitable material or shall be excavated as specified.

Except as otherwise specified, earth foundation surfaces shall be graded to remove surface irregularities, and test pits or other cavities shall be filled with compacted earthfill of approximately the same kind and density as the adjacent foundation material.

Rock foundation surfaces shall be cleared of all loose material not conforming to the specifications for the rockfill.

Abutments for rockfill zones of embankments shall be prepared as specified above for foundations.

Rockfill and/or bedding shall not be placed until the foundation preparation is completed and the foundation and excavations have been inspected and approved.

4. Bedding When a bedding layer beneath rockfill is specified, the bedding material shall be spread uniformly on the prepared subgrade surfaces to the depth indicated. Compaction of the bedding material shall be as specified in section 10 of this specification.

5. Placement The rock shall be evenly spread on the geotextile in a method that does not cause damage or wrinkling of the geotextile. It shall be placed to produce a reasonably homogeneous stable fill that contains no segregated pockets of large or small fragments or large unfilled spaces caused by bridging of the larger rock fragments.

6. Control of moisture The moisture content of rockfill material shall be controlled as specified in section 10 of this specification. When the addition of water is required, it shall be applied in a manner to avoid excessive wetting of adjacent earthfill. Except as specified in Section 10 of this specification, control of the moisture content is not required.

The moisture content of the bedding material shall be controlled to ensure that bulking of the sand materials does not occur during compaction operations.

7. Compaction of rockfill Rockfill shall be compacted as described below for the class of compaction specified or by an approved equivalent method.

Roark WRP-Amended 25-1 June 2015 NRCS-South Carolina Williamsburg County

Class III compaction—No compaction is required beyond that resulting from the placing and spreading operations.

8. Compaction of bedding Bedding shall be compacted according to the following requirements for the Class of compaction specified:

Class III compaction—No compaction is required beyond that resulting from the placing and spreading operations required for dike construction.

Heavy equipment shall not be operated within 2 feet of any structure. Vibrating rollers shall not be operated within 5 feet of any structure. Compaction by means of drop weights operating from a crane, hoist, or similar equipment is not permitted.

When compaction other than Class III is specified, bedding placed in trenches or other locations inaccessible to heavy equipment shall be compacted by manually controlled pneumatic or vibrating tampers or by equivalent methods approved by the engineer.

9. Measurement and payment Compensation for any type of work described in the contract, but not listed in the bid schedule is included in the payment for the item of work to which it is made subsidiary. Such items and the items to which they are made subsidiary are identified in Section 10 of this specification.

10. Items of work and construction details Items of work to be performed in conformance with this specification and construction details therefore are:

A. Subsidiary Item, Rockfill

1. This item shall consist of furnishing and installing rockfill over the geotextile to form the crossings.

Rockfill shall be a minimum of 6 inches deep on top of the geotextile. The top elevation of the rockfill shall be the bottom elevation specified in Drawing 3 of 3.

2. Rockfill shall be Class No. 5 as specified by AASHTO standard specification for transportation materials (commonly referred to as railroad ballast).

Sieve Size or Designation

(inch)

Weight Passing For Aggregate (percent)

1 1/2 100 1 90 - 100

3/4 20 - 55 1/2 0 - 10 3/8 0 - 5

3. No. 3 Slag will be accepted.

4. All roads on site damaged by hauling equipment shall be repaired to the same condition as before construction or better and seeded.

5. Furnishing and installing the rockfill is made subsidiary to the bid item where the work is performed. All compensation for furnishing and installing the rockfill shall be considered as included in the contract lump sum price for Bid Items 2 - 4, Construct Crossings.

Roark WRP-Amended 25-2 June 2015 NRCS-South Carolina Williamsburg County

A. Subsidiary Item, Rockfill for Temporary Access (Optional)

1. This item is optional and only applicable if wooden, steel or composite matting cannot be used and that justification has been approved by the Contracting Officer, then the work shall consist of furnishing and installing rockfill to create a temporary access road adjacent to the small wooden bridge.

2. Rockfill shall be of sufficient size and depth to accommodate equipment access throughout construction, unless the contract is postponed by the Contracting Officer due to the river being in flood stage. Geotextile shall be laid underneath the rockfill as required for other geotextile placement stated in Construction Specification 95 – Geotextile.

3. Furnishing and installing the rockfill for temporary access is made subsidiary to Bid Item 1, Mobilization. All compensation for furnishing and installing the rockfill shall be considered as included in the contract lump sum price for Bid Item 1, Mobilization.

- END OF CONSTRUCTION SPECIFICATION 25 -

Roark WRP-Amended 25-3 June 2015 NRCS-South Carolina Williamsburg County